Add git commit id to the version if it's not a tag
[lttng-tools.git] / src / bin / lttng-sessiond / lttng-sessiond.h
CommitLineData
8c0faa1d
DG
1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
88564da0 3 * Copyright (C) 2013 - Raphaël Beamonte <raphael.beamonte@gmail.com>
fac6795d 4 *
d14d33bf
AM
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
8c0faa1d 8 *
fac6795d
DG
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
d14d33bf 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
fac6795d 12 * GNU General Public License for more details.
8c0faa1d 13 *
d14d33bf
AM
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
fac6795d
DG
17 */
18
19#ifndef _LTT_SESSIOND_H
20#define _LTT_SESSIOND_H
21
099e26bd 22#define _LGPL_SOURCE
f6a9efaa 23#include <urcu.h>
099e26bd
DG
24#include <urcu/wfqueue.h>
25
10a8a223 26#include <common/sessiond-comm/sessiond-comm.h>
d0b96690 27#include <common/compat/poll.h>
730389d9 28#include <common/compat/socket.h>
10a8a223
DG
29
30#include "session.h"
56fff090 31#include "ust-app.h"
88564da0 32#include "version.h"
099e26bd 33
686204ab
MD
34extern const char default_home_dir[],
35 default_tracing_group[],
36 default_ust_sock_dir[],
37 default_global_apps_pipe[];
fac6795d 38
2f77fc4b
DG
39/* Set in main.c at boot time of the daemon */
40extern int kernel_tracer_fd;
41
5461b305
DG
42/*
43 * This contains extra data needed for processing a command received by the
44 * session daemon from the lttng client.
45 */
46struct command_ctx {
47 int ust_sock;
48 unsigned int lttng_msg_size;
49 struct ltt_session *session;
50 struct lttcomm_lttng_msg *llm;
51 struct lttcomm_session_msg *lsm;
730389d9 52 lttng_sock_cred creds;
5461b305
DG
53};
54
099e26bd
DG
55struct ust_command {
56 int sock;
57 struct ust_register_msg reg_msg;
58 struct cds_wfq_node node;
59};
60
61/*
62 * Queue used to enqueue UST registration request (ust_commant) and protected
63 * by a futex with a scheme N wakers / 1 waiters. See futex.c/.h
64 */
65struct ust_cmd_queue {
66 int32_t futex;
67 struct cds_wfq_queue queue;
68};
69
f45e313d
DG
70/*
71 * This is the wait queue containing wait nodes during the application
72 * registration process.
73 */
74struct ust_reg_wait_queue {
75 unsigned long count;
76 struct cds_list_head head;
77};
78
79/*
80 * Use by the dispatch registration to queue UST command socket to wait for the
81 * notify socket.
82 */
83struct ust_reg_wait_node {
84 struct ust_app *app;
85 struct cds_list_head head;
86};
87
d0b96690
DG
88/*
89 * This pipe is used to inform the thread managing application notify
90 * communication that a command is queued and ready to be processed.
91 */
92extern int apps_cmd_notify_pipe[2];
93
0b2dc8df
MD
94/*
95 * Used to notify that a hash table needs to be destroyed by dedicated
96 * thread. Required by design because we don't want to move destroy
97 * paths outside of large RCU read-side lock paths, and destroy cannot
98 * be called by call_rcu thread, because it may hang (waiting for
99 * call_rcu completion).
100 */
101extern int ht_cleanup_pipe[2];
102
12744796
DG
103/*
104 * Populated when the daemon starts with the current page size of the system.
105 */
106extern long page_size;
107
4d076222
DG
108/*
109 * Global set once in main(). JUL TCP port for registration.
110 */
111extern unsigned int jul_tcp_port;
112
26296c48
JG
113/*
114 * Section name to look for in the daemon configuration file.
115 */
116extern const char * const config_section_name;
117
f43f95a9
DG
118/* Is this daemon root or not. */
119extern int is_root;
120
d0b96690
DG
121int sessiond_set_thread_pollset(struct lttng_poll_event *events, size_t size);
122int sessiond_check_thread_quit_pipe(int fd, uint32_t events);
123
0b2dc8df
MD
124void *thread_ht_cleanup(void *data);
125
ef367a93
JG
126void sessiond_notify_ready(void);
127
fac6795d 128#endif /* _LTT_SESSIOND_H */
This page took 0.065268 seconds and 4 git commands to generate.